MCQs on ecosystem with answers pdf

Environmental Science MCQs: In this blog post, we have written important MCQs on ecosystems with answers pdf.

These Ecosystem multiple-choice questions are useful for all classes and competitive exams.

MCQs on ecosystem with answers pdf

1. A pond can be divided on the basis of penetration of light into :




 All the above

2. Cyclops and Cypris are being classified under the category of :


 Benthic Animals


 Lotic Animal

3. Decomposers are also known as saprophytes and detrivores. Whether this statement is :



4. Grass → Grasshopper → Frog → Snake → Hawk

In the above-mentioned food chain, which trophic level belongs to Grasshopper and Snake?

 First and Fifth

 Second and Fourth

 First and Fourth

 Second and Fifth

5. Out of the following which one is placed in the category of decomposers :





6. The amount of the living matter at any time is known as-

 Pyramid of Energy

 Pyramid of Number

 Food Web

 Standing of Biomass

7. The flow of energy in an ecosystem is always –





8. The total number at which the radiant energy is stored by the process of photosynthesis in the green plants is known as:





9. Which one is not included in the Abiotic component?





10. Who coined the term Ecosystem?

 Robert Hooke

 A. G. Tenslwy

 John Aber

 Sarah Martha

MCQs on Natural Ecosystem

1. ………. is the ship of the deserts as it can travel long distances without drinking water for several days.





2. An area has harsh winter, with a mean annual temperature below 0oC and, the soil is not rich in humus and acidic, which are the characteristics of …..

 Boreal Forest

 Tropical Rain Forest

 Taiga Forest

 Tundra Forests

3. Deltas are triangular areas bordering the river valley towards the mouth. They are associated with the land projecting into the sea in the form of the protuberance. Whether this definition is



4. Grassland of South America is known as:





5. Natural ecosystem is always dependent on …………….

 Solar Energy

 Tidal Energy

 Nuclear Energy

 Biomass Energy

6. Out of the following plant species is not found in the Himalayan Region?

 Dalbergia Sissoo

 Pinus roxburghii


 Acacia Leucophloea

7. River mouths, coastal ways, tidal marshes, and lagoons are examples of:





8. Study of freshwater is known as ……………





9. The region which shows maximum biodiversity, rich in new species and endemic forms is known as:

 Western Ghats

 Eastern Ghats

 Hot Spots

 Northern Ghats

10. Which type of forest is found in North America and northern Eurasia is below the Arctic Tundra?

 Tidal Forests

 Rain Forests

 North Coniferous Forests

 Alpine Forests

MCQs on Human Modified Ecosystem

1. A practice to keep fish in captive condition for a few years in floating cages in coastal lagoons and release them from captivity into water bodies is called as :





2. An ecosystem that may or may not be dependent on solar energy is known as :

 Human Modified Ecosystem

 Natural Ecosystem


 Artificial Ecosystem

3. Dams are used for :

 Generating electricity

 Reducing river silting

 Supply irrigation water for agriculture

 All the above

4. Eco-industry or industrial ecology is to make the industrial manufacturing process more sustainable by redesigning the industrial processes along with the pattern of natural processes. Whether this statement is



5. Highly simplified, species diversity, highly unstable, and susceptible to plant diseases are the main features …………… ecosystem.




 Laboratory Culture

6. Human modified system is highly simplified, species diversity is very low, depends on human survival, and is highly unstable. Whether this statement is



7. MIC stands for :

 Minimum Inhibitory Concentration

 Message Integrity Code

 Methyl Iso Cyanate

 Military-Industrial Complex

8. Main demerits of aquaculture is :

 High profit

 Loss of native aquatic biodiversity

 Overharvesting of fisheries

 Fishes are very sensitive to pesticides runoff

9. Tree planted on barren lands, village panchayat, roadsides, railway tracks, etc. is known as:

 Village Ecosystem

Agro Ecosystem

 Urban Ecosystem

 Plantation Forest

10. Which toxic matter is released after burning plastics :

 Carbon dioxide


 Poly chlorinated biphenyls

 Particulate matter

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